I once had an assessment by a chiropractor. I wasn't having any pains - it was just to check that all was well.
He told me that my neck was stiffer than it should be and I was aware that I can turn my head less on one side than the other so I booked 3 brief sessions to try and correct any future problems.
I quickly cancelled the last session as I was worried when he hit my neck with his hand and made the discs "creak". It probably sounds crazy but I was frightened of them snapping and my neck being broken.
For these reasons I agree with those who prefer physios or osteopaths.
doesn't sound crazy at all, unfortunately.
cases of ruptured arteries and strokes, disc damage etc are real.